Is there any way to contract my own IP Address with SS? Some Services requires me to register my IP Address and today I'm forced to build my own VM/Server somewhere else which really I do not like. It would be great to have the Option to contract in SS my own static IP.

No unfortunately that's not something that's practical with the way the sipsorcery software and service work. It would be easier to set up a completely stand alone instance which is the equivalent of having your own VM/server.

The issue you'll probably encounter is while it may not be too bad to get the SIP Proxy up and running you'll soon encounter scenarios where you need to customise things just a little bit and then you'll have a steep learning curve to get to grips with how the SIP Proxy and SIP work. And if you have audio issues it just gets worse.

I'd estimate running a single user SIP server is roughly 5 to 10 times as much effort as running a web server (if it's multi-user it's more like 100 times).